feat: Added agent variables support for graph agents and improved script executor to use the same environment variables as normal agent tool calling for further flexibility

src/config/agent.rs

@@ -678,6 +678,7 @@ impl AgentConfig {
             global_tools: graph.global_tools.clone(),
             mcp_servers: graph.mcp_servers.clone(),
             conversation_starters: graph.conversation_starters.clone(),
+            variables: graph.variables.clone(),
             can_spawn_agents: graph.has_agent_node(),
             max_concurrent_agents: default_max_concurrent_agents(),
             max_agent_depth: default_max_agent_depth(),

src/config/mod.rs

@@ -14,7 +14,9 @@ pub(crate) mod todo;
 mod tool_scope;
 mod update;
 
-pub use self::agent::{Agent, AgentVariables, complete_agent_variables, list_agents};
+pub use self::agent::{
+    Agent, AgentVariable, AgentVariables, complete_agent_variables, list_agents,
+};
 #[allow(unused_imports)]
 pub use self::app_config::AppConfig;
 #[allow(unused_imports)]